stat api

src/main/java/com/alibaba/druid/stat/JdbcSqlStat.java

@@ -164,6 +164,16 @@ public final class JdbcSqlStat implements JdbcSqlStatMBean {
 
         context.setFile(val);
     }
+    
+    public final static void setContextSql(String val) {
+        JdbcStatContext context = JdbcStatManager.getInstance().getStatContext();
+        if (context == null) {
+            context = JdbcStatManager.getInstance().createStatContext();
+            JdbcStatManager.getInstance().setStatContext(context);
+        }
+
+        context.setSql(val);
+    }
 
     public String getName() {
         return name;

src/test/java/com/alibaba/druid/bvt/proxy/filter/StatFilterTest2.java

@@ -0,0 +1,49 @@
+package com.alibaba.druid.bvt.proxy.filter;
+
+import java.sql.Connection;
+import java.sql.Statement;
+
+import junit.framework.TestCase;
+
+import com.alibaba.druid.pool.DruidDataSource;
+import com.alibaba.druid.stat.JdbcStatContext;
+import com.alibaba.druid.stat.JdbcStatManager;
+
+public class StatFilterTest2 extends TestCase {
+
+    private DruidDataSource dataSource;
+
+    protected void setUp() throws Exception {
+        dataSource = new DruidDataSource();
+        dataSource.setUrl("jdbc:mock:");
+        dataSource.setFilters("stat");
+    }
+
+    protected void tearDown() throws Exception {
+        dataSource.close();
+    }
+
+    public void test_0() throws Exception {
+
+        Connection conn = dataSource.getConnection();
+
+        Statement stmt = conn.createStatement();
+
+        setStatSql("Select ?");
+        stmt.execute("select 1");
+
+        stmt.close();
+
+        conn.close();
+    }
+
+    public final static void setStatSql(String val) {
+        JdbcStatContext context = JdbcStatManager.getInstance().getStatContext();
+        if (context == null) {
+            context = JdbcStatManager.getInstance().createStatContext();
+            JdbcStatManager.getInstance().setStatContext(context);
+        }
+
+        context.setSql(val);
+    }
+}